Efficient Power Transmission: This device supports the transmission of POE power devices, but it cannot replace the POE function. You cannot use this device to convert ordinary devices into POE devices.
2-In-1 POE Camera Simplified Cable Connector Splitter Cable
PoE RJ45 Splitter Kit for Ethernet Cable Sharing – Dualcomm
RJ45 Pinout
How to Choose Ethernet Cables for Security Cameras?
dc 12v ip camera poe rj45
Connecting 2 IP cameras via the Ethernet port JN - Jetson Nano
POE Splitter 2-in-1 network cabling connector three-way RJ45 connector For HD IP Camera CCTV Accessories
This is for driving two POE devices off one cable. If you have an extremely long run for one camera and you needed to add another, this would be a great solution. Plugged into two POE+ ports at the switch which uses one CAT6 cable and at the far end it splits to two POE ports that you have a splitter for Ethernet and 12-Volt to run a powered mic and camera and the other is just running another POE camera.
SPT RJ45 Ethernet Cable Combiner Splitter Kit (2-Pair)
Features:, Brand new and high quality, The product can transfer 2 network devices using one Ethernet cable. Save on wiring costs., Suitable for
Splitter 2-in-1 Network Cable Connector Three-way RJ45 for Head POE Camera Insta
Great Choice Products GCP-0105-01083098 2-Set Poe Combiner/Mux
Ethernet Splitter 101: All You Need To Know